I'm having the same issue. iCloud is turned off. What the hell is it downloading? I know it's downloading something because my phone is full and give an almost full message every time Plex iOS says it's downloading from iCloud.
Not only that, but every thing that has actually uploaded has been corrupted. This feature worked once; now it's broken.
I'm actually a little surprised that there had not been any response. Every single person posting in this thread has purchased a Shiny New Plex Pass; including me. I've been paying this company every month for over a year now. I really expect a little more than this. If you all would maybe not spend all your time trying to make the software bigger, better, newer, different, you'd have time to fix the last thing y'all fucked up.
You know, I get security updates, useful new features and all that, but if you keep changing and adding to a piece of software, it's like never emptying your refrigerator. ROTTEN! So, when things randomly break and go wrong, frustrating the user, it makes the software absolutely useless because it doesn't give you piece of mind. It messes with your mind and forces you to be your own tech support.
That's not piece of mind, that's me doing your work for you.